Cita APA (7a ed.)

Douglas, E. S., Girimonti, S., & Samuel, J. (2019). B2 train up your skills: Extensive English skills practice. Editorial Tébar Flores.

Cita Chicago Style (17a ed.)

Douglas, Elisabeth S., Silvia Girimonti, y Julia Samuel. B2 Train Up Your Skills: Extensive English Skills Practice. Madrid: Editorial Tébar Flores, 2019.

Cita MLA (9a ed.)

Douglas, Elisabeth S., et al. B2 Train Up Your Skills: Extensive English Skills Practice. Editorial Tébar Flores, 2019.